NS0-502: NCIE-SAN 7-Mode

By Netapp · Question Mode

QuestionQ9

SAN concepts

A 100-GB thinly provisioned LUN is assigned to a Windows host. After 100 GB of data is written to the LUN, capacity utilization on both the disk array and the host is 100%. Then, 50 GB of data is deleted from the LUN. Space Reclaimer has not been run.

What is the current capacity utilization on the host and on the disk array?

Explanation

Deleting data updates the host file system’s free-space accounting, leaving 50 GB used on the 100-GB LUN. Thin-provisioned array blocks that were previously allocated remain allocated until a reclamation operation, such as SCSI UNMAP, informs the array that the blocks can be released; therefore, array utilization remains 100%.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!